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基于Ti-5Al-1V-1SN-1Zr-0.8Mo合金的分段电压微弧氧化膜层的研究
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内蒙古工业大学 材料科学与工程学院

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The study on micro arc oxidation coating based on Ti-5Al-1V-1Sn-1Zr-0.8Mo alloy with applied voltage in stages
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School of Materials Science and Engineering,Inner Mongolia University of Technology

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    摘要:

    本文主要研究分段电压对于钛合金表面所制备的微弧氧化膜层特性的影响。利用扫描电子显微镜(SEM)和激光扫描共聚焦显微镜对MAO膜层的结构进行了表征,利用能谱分析(EDS)和X射线衍射(XRD)并对膜层成分进行分析。对比评价了不同分段电压模式下膜层的厚度、粗糙度和耐蚀性。结果表明,与不同分段电压相比,第一阶段电压为320V 氧化时间180s与第二阶段电压为420V氧化时间为720s,所形成的膜层粗糙度最小。第一阶段外加电压320V氧化时间120s与第二阶段外加电压420V时间780s,膜层最为致密,耐腐蚀性最好。XRD结果表明,膜层是由TiO2和亚稳态Ti2O3组成。

    Abstract:

    The aim of this work is to study how applied voltage in stages incorporates into the prepared micro arc oxidation (MAO) coatings on titanium and control the characteristics and resistances. The microstructure of MAO coatings were characterized by scanning electron microscope (SEM) and laser scanning confocal microscopy, and the coating composition were analyzed by energy dispersive spectrometer (EDS) and X-Ray diffraction (XRD). Thickness, roughness and corrosion resistance of coatings were evaluated. Compared with the coating obtained in different applied voltage stages, the coating formed on substrate alloy with first applied voltage is 320V for 180s and second applied stage is 420V for 720s showed a minimal roughness. The coating with first applied voltage is 320V for 120s and second applied stage is 420V for 780s exhibits a dense micro structure and the best corrosion resistance. The XRD result shows that the MAO coating is composed with TiO2 and Ti2O3 in metastable state.

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吕凯,郭宝全,张雅萍,陈伟东.基于Ti-5Al-1V-1SN-1Zr-0.8Mo合金的分段电压微弧氧化膜层的研究[J].稀有金属材料与工程,2019,48(8):2474~2479.[Lü Kai, Guo baoquan, Zhang yaping, Chen weidong. The study on micro arc oxidation coating based on Ti-5Al-1V-1Sn-1Zr-0.8Mo alloy with applied voltage in stages[J]. Rare Metal Materials and Engineering,2019,48(8):2474~2479.]
DOI:10.12442/j. issn.1002-185X.20181159

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  • 收稿日期:2018-11-19
  • 最后修改日期:2018-12-04
  • 录用日期:2018-12-05
  • 在线发布日期: 2019-09-05
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